From patchwork Wed Apr 12 22:46:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Tanure X-Patchwork-Id: 8100 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp665489vqo; Wed, 12 Apr 2023 16:26:58 -0700 (PDT) X-Google-Smtp-Source: AKy350aKAyScniMWJSgQmZeY1TgvcaD2ZwCDQrrzdhOngBGyrxDyW2clztwX3gApistkxuyb7UIs X-Received: by 2002:a17:906:f257:b0:94a:74b8:7b85 with SMTP id gy23-20020a170906f25700b0094a74b87b85mr4366962ejb.6.1681342018022; Wed, 12 Apr 2023 16:26:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681342018; cv=none; d=google.com; s=arc-20160816; b=crgVmL4aojtoS6pdKBp0F+J/soV4moEQPZAD0fw+BabSY8z0tx/LMDrvTH0N0ngO0y 3OgoC2yvTtSVxvqtaQSVnuDllmWEDjldtNwZjuBG8FpGtNDoWDryzwVpM3bsU7HSWZLF e4D5BDp+GbxoGRGKvjXZfXnYsoy7QE4YNwwtK58coQ/EDz8cYF+hVGWPKAzO3BEWFgln vu8asI25EuQakiYc2MRiJGeIE++ERus8ETo70yQ6/Y3+B3RAQfVL0yWZylZfDvLME3vC U025oX5WGJEuo6UJF9COu56JhT9zsxsp3zZLDeTzRhCE+rQa//DKqTZUF+/gUWt+Ym+B 1YyQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=Pne7zvLmG7QcEYfgoOlm61Hw/xE8wOJKTFUuUUTpcYQ=; b=SVjbRWun0n58AnSLSzbzVIlWuczRY1M//O/E+iTwjiPoca8wQtoZ0Cr1RX6ujep5m8 IyhjDAHwgzkrnKdhhIU7anSUUEJyP5f6qoYM0ZZNM39h2Yc3Ncq7HUACCV8i4AyDOekN 6C2SU73C+Y9gpz+l/w+I406qXN0qrBqDV3WqtDr72JTj/K6ByIZr8AwF1rT/MOVe2HG7 Y1V1IFmzCaT02EWNVdNpxCkA+QA5TbHufVamE5y/5TxHO6RsnqOM/QEfs4ecw432ebju ++iEAJq694Z0Z/+Q60Kp5c9IWATFVIxsrdn7HUlSVOTgnCbiWzVAFYM55AMHGFmofX4m Lz9g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id jr19-20020a170906515300b0094a7d386da4si169318ejc.251.2023.04.12.16.26.32; Wed, 12 Apr 2023 16:26:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229546AbjDLWqc (ORCPT + 99 others); Wed, 12 Apr 2023 18:46:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbjDLWqa (ORCPT ); Wed, 12 Apr 2023 18:46:30 -0400 Received: from mail-oi1-f178.google.com (mail-oi1-f178.google.com [209.85.167.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02E446A4D; Wed, 12 Apr 2023 15:46:30 -0700 (PDT) Received: by mail-oi1-f178.google.com with SMTP id bm45so3147368oib.4; Wed, 12 Apr 2023 15:46:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681339589; x=1683931589; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Pne7zvLmG7QcEYfgoOlm61Hw/xE8wOJKTFUuUUTpcYQ=; b=RXOQwJJWcRpH8miHMRdP6GJz5mH4Ht/uKe6pxNh+ykS0ZgLZETG2G2PWulSHBPYGbY 336z4DHHodBNJHeJBfyfN1B7SmLUMa3vLKTOthrxHEu0zAjsOgmhUXQy9VqwEbogm1h3 IaBCLO0w4r/SoyZ6OP/1FSIMddjPHVg6IHU9Gmov53kAHgf11uTQBaZnvE4VMKchp1ee mcXPwZi8BtBHCOcRc8DwdBOcfKrzwzywMIhk4ABlIysO8iF9OmBssc/lVT4JHyFhNeBO +BfiJutDrc7U/d/MJ+i8r2qekdbEt7UQGzAHHuohPLE2++7mZ75+V9GDgNHgJXIoSNVj 1aLQ== X-Gm-Message-State: AAQBX9d5j7wZvMTvD5RlJGrc4R6TqJW3gHzNh7JViRx5GN50shdwxmK0 kQbL1MPER0wYDe1WH3pS660= X-Received: by 2002:a05:6808:106:b0:387:77f1:21 with SMTP id b6-20020a056808010600b0038777f10021mr104823oie.48.1681339589345; Wed, 12 Apr 2023 15:46:29 -0700 (PDT) Received: from archfamilia.lan ([181.219.149.7]) by smtp.gmail.com with ESMTPSA id cg9-20020a056808328900b0038beb8c1289sm50012oib.15.2023.04.12.15.46.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Apr 2023 15:46:28 -0700 (PDT) From: Lucas Tanure To: Rob Herring , Frank Rowand , Mike Rapoport , Andrew Morton Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, jbrunet@baylibre.com, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, martin.blumenstingl@googlemail.com, narmstrong@baylibre.com, stefan@agner.ch, Lucas Tanure Subject: [PATCH v3 0/1] Fix Random Kernel panic from when fail to reserve memory Date: Wed, 12 Apr 2023 18:46:19 -0400 Message-Id: <20230412224620.8909-1-tanure@linux.com> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763014887515273955?= X-GMAIL-MSGID: =?utf-8?q?1763014887515273955?= I am trying to fix an issue where the kernel panics randomly on my Vim3 board. The problem happens when the ARM Trusted Firmware memory is not removed from the available ram. This happens because my u-boot provides /memreserve/, but it doesn't flag it as nomap. And the kernel scan of /reserved-memory node can't map as nomap as the region is already reserved. The idea now is to scan /memreserve/ after /reserved-memory node, and /memreserve/ will skip regions already reserved by /reserved-memory node. Previous Threads: #regzbot link: https://lore.kernel.org/linux-arm-kernel/40ca11f84b7cdbfb9ad2ddd480cb204a@agner.ch/#regzbot #regzbot link: https://lore.kernel.org/all/CAJX_Q+1Tjc+-TjZ6JW9X0NxEdFe=82a9626yL63j7uVD4LpxEA@mail.gmail.com/ V1: https://lore.kernel.org/all/20230406151429.524591-1-tanure@linux.com/ v2: https://lore.kernel.org/all/20230410120017.41664-1-tanure@linux.com/ Change from V2: - Remove region overlap and reserved checks Change from V1: - Instead of allowing to mark nomap a region already reserved, give precedence to /reserved-memory node scan. Lucas Tanure (1): of: fdt: Scan /memreserve/ last drivers/of/fdt.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)